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How secure are United Kingdom's domains?
Most businesses in United Kingdom use a .uk domain. Across 6,462,996 of them, here's how their security stacks up — aggregate patterns only, never an individual business. As of 2026-07-29.
In the .uk zone — covering United Kingdom — 66.2% of 6,462,996 graded domains earn an F, well below the 73.8% internet-wide average. DMARC enforcement here stands at 14.8% — above the 11.8% census-wide rate.
We use .uk as a stand-in for United Kingdom, based on the domain's ending rather than where a company is legally registered — so United Kingdom businesses using a generic ending like .com aren't counted here.
Grade distribution
| Grade | Domains | Share |
|---|---|---|
| A+ | 1,626 | 0% |
| A | 9,583 | 0.1% |
| B | 164,543 | 2.5% |
| C | 657,403 | 10.2% |
| D | 1,349,379 | 20.9% |
| F | 4,280,462 | 66.2% |
See exactly where your own United Kingdom domain ranks — free and private → Check your domain. Or browse .uk in detail and the most & least secure TLDs.
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